[INFO] fetching crate teatree 0.0.4...
[INFO] documenting teatree-0.0.4 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate teatree 0.0.4 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate teatree 0.0.4 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate teatree 0.0.4
[INFO] finished tweaking crates.io crate teatree 0.0.4
[INFO] tweaked toml for crates.io crate teatree 0.0.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generic-array v0.9.1
[INFO] [stderr]   Downloaded block-buffer v0.3.3
[INFO] [stderr]   Downloaded historian v4.0.4
[INFO] [stderr]   Downloaded pagecache v0.17.0
[INFO] [stderr]   Downloaded digest v0.7.6
[INFO] [stderr]   Downloaded sled v0.24.1
[INFO] [stderr]   Downloaded sha3 v0.7.3
[INFO] [stderr]   Downloaded jsonrpc-parse v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f917c3dbf06a4ee17d5c1d9f7be76966a8d3dab587d4ecb403d1368d21750f1a
[INFO] running `Command { std: "docker" "start" "-a" "f917c3dbf06a4ee17d5c1d9f7be76966a8d3dab587d4ecb403d1368d21750f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f917c3dbf06a4ee17d5c1d9f7be76966a8d3dab587d4ecb403d1368d21750f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f917c3dbf06a4ee17d5c1d9f7be76966a8d3dab587d4ecb403d1368d21750f1a", kill_on_drop: false }`
[INFO] [stdout] f917c3dbf06a4ee17d5c1d9f7be76966a8d3dab587d4ecb403d1368d21750f1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5c0e0af1f17b17951529c100a2452168b9193f6a8d526272d2441c27ce691ac
[INFO] running `Command { std: "docker" "start" "-a" "f5c0e0af1f17b17951529c100a2452168b9193f6a8d526272d2441c27ce691ac", kill_on_drop: false }`
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[INFO] [stderr]     Checking actix-rt v0.2.6
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[INFO] [stderr]     Checking hashbrown v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.96
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_bytes v0.11.9
[INFO] [stderr]     Checking ed25519 v1.5.3
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]     Checking pagecache v0.17.0
[INFO] [stderr]     Checking actix-http v0.2.11
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[INFO] [stderr]     Checking sled v0.24.1
[INFO] [stderr]     Checking actix v0.8.3
[INFO] [stderr]  Documenting teatree v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_drain_as_slice)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `teatree`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name teatree src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0153f9910d3266ee -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-c99f3f1c36c674d4.rmeta --extern actix_derive=/opt/rustwide/target/debug/deps/libactix_derive-6410a2cf90c80496.so --extern bincode=/opt/rustwide/target/debug/deps/libbincode-8fd894b4fd49b62e.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-4489c14c678ec211.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-2851a52333d98d0c.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-071911b376521bc7.rmeta --extern ed25519_dalek=/opt/rustwide/target/debug/deps/libed25519_dalek-3f89e23b6a56f269.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-cb7891a2cdda9572.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-a3d5cd7832f6a737.rmeta --extern jsonrpc_parse=/opt/rustwide/target/debug/deps/libjsonrpc_parse-4ae5ee3b5a7ac03f.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-5b0fcdba5a27952d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-df0e571faa70b091.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-6b991ee415e9997d.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c7a925d6e3d5ec5f.rmeta --extern sha3=/opt/rustwide/target/debug/deps/libsha3-a68e686dd50e87b1.rmeta --extern sled=/opt/rustwide/target/debug/deps/libsled-0049f08ce66023b6.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-098281f4e050d68b.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-079e0cb5ace74f3a.rmeta --cap-lints=warn --crate-version 0.0.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f5c0e0af1f17b17951529c100a2452168b9193f6a8d526272d2441c27ce691ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5c0e0af1f17b17951529c100a2452168b9193f6a8d526272d2441c27ce691ac", kill_on_drop: false }`
[INFO] [stdout] f5c0e0af1f17b17951529c100a2452168b9193f6a8d526272d2441c27ce691ac
